Heated Oxygen Sensor 2 Heater

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Check resistance between HO2S2 terminals as follows.

Terminal No.	Resistance
2 and 3	8 - 10 Ω [at 25°C (77°F)]
1 and 2, 3, 4	∞Ω (Continuity should not exist)
4 and 1, 2, 3	∞Ω (Continuity should not exist)

Fig 1: Checking Resistance Between HO2S2 Terminals

Courtesy of NISSAN NORTH AMERICA, INC.

If NG, replace heated oxygen sensor 2. Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST .
CAUTION:
- Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one.
- Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.